Free Shipping Over $39.99

Orders $39.99 or more ship free within the contiguous U.S.

Free Shipping Policy

No Restock Fees

Doesn't fit? Don't love it?

Return any unused item within 30 days for a full refund.

No-Hassle Returns

  1. Obtain an RA number
  2. Package your product
  3. Send it back to us!
Return Policy

Price Match Guarantee

Found it for less?

RevZilla will match any advertised price on new merchandise available through another authorized U.S. dealer.

Price Match Policy

Elite Service Rating

Our goal is to provide the best possible shopping experience to every enthusiast who visits RevZilla.

See what our customers are saying about us:

Customer Reviews

ZillaCash Rewards

The ZillaCash rewards program is very straightforward - if you have a RevZilla account, you may already be taking advantage of ZillaCash rewards. Review the following guidelines to see how easy it is to maximize your rewards and put your ZillaCash to work for you.

  • Earn and redeem ZillaCash credit automatically with each order - no fine print, no strings attached, and no hoops to jump through to cash in.
  • All you need is a RevZilla account to start earning - Simply log in each time you shop with RevZilla and we’ll take care of the rest, keeping more money in your pocket just for shopping with us.
  • Earn $5 for Each $100 You Spend on eligible products - up to a maximum of $30 ZillaCash per order for orders totaling $600 or more. Any ZillaCash you earn is automatically applied to the next purchase, so you can sit back, enjoy the ride and feel the savings blow through your hair.
Learn More About ZillaCash

Extended Holiday Returns

Any items purchased on, or after, November 1, 2017 have had their accepted return window extended until January 31st, 2018.

Extended Returns Policy

Looking for a deal?

Give us a call and one of our Gear Geeks will help you get the right deal for you and yours.

Monday - Friday: 9AM - 8PM ET
Saturday: 10AM - 6PM ET
Sunday: 11AM - 7PM ET
Call 877-792-9455

Progressive 444 Shocks For Harley Trike 2009-2018

Item: P319814

With Frequency Sensing Technology and progressively wound springs, the 444 shocks offer a significant ride upgrade over stock. Read More

$562.46
$624.95
Save $62.49 (10%)

This product is vehicle specific. Please to ensure fitment.

Learn More

Product Details

Progressive Suspension 444 Series FST Shocks For Harley Tri-Glide

After more than a decade of ruling the roads with the road proven shocks, Progressive Suspension unveiled another breakthrough design. Dubbed Frequency Sensing Technology (FST) for its unique ability to dynamically adjust damping as you ride. The result is superior performance no matter the road conditions. A top mount threaded preload adjuster allows for fine tuning with a simple twist of the cap.

Features:

  • Frequency Sensing Technology (FST) allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality
  • Adjust spring pre-load by hand - no special tool needed
  • Progressive-rate spring
  • Deflective disc valving
  • 13 1/2" length
  • Sold as a pair
  • Made in USA

Notes:

  • Stock shock length is 13"- These are 1/2" longer to allow for a smoother ride
  • Shock lengths are measured fully extended, eyelet to eyelet on centers
  • A change in height at one end of the bike may require a change at the other
  • Changing ride height can potentially change the trail and mechanical trail
  • Heavy Duty shocks are recommended for bikes operated at or near the OEM maximum load rating over 50% of the time
  • Prior to purchasing shocks that are different than your OEM length, please verify that wheel and suspension travel can be altered without causing clearance issues to the swingarm, axle, frame, tire, fender, chain/belt and guard, and exhaust
Made in the USA
Product Style RevZilla Item # MFR. Product # Availability
Product Style Standard / 13 1/2" Long RevZilla Item #1075839 MFR. Product #444-4074B AvailabilityIn Stock: Ships next business day
Product Style Heavy Duty / 13 1/2" Long RevZilla Item #1075838 MFR. Product #444-4073B AvailabilityIn Stock: Ships next business day

This product is vehicle specific. Please to ensure fitment.

Harley Davidson
Freewheeler FLRT 2015, 2016, 2017, 2018
Street Glide Trike FLHXXX 2010, 2011
Tri Glide Ultra Classic FLHTCUTG 2009-2018
This item is also available for 67 different models
Harley Davidson
Dyna Convertible FXDS 1994-2000
Dyna Fat Bob FXDF 2008-2017
Dyna Glide Custom FXDC 1992
Dyna Glide Daytona FXDB-D 1992
Dyna Glide Sturgis FXDB-S 1991
Dyna Low Rider FXDL/I 1993-2017
Dyna Low Rider S FXDLS 2016-2017
Dyna Street Bob FXDB/I 2006-2017
Dyna Super Glide Custom FXDC/I 2005-2014
Dyna Super Glide FXD/I 1995-2010
Dyna Super Glide Sport FXDX 1999-2005
Dyna Super Glide Sport Touring FXDXT 2001-2003
Dyna Switchback FLD 2012-2016
Dyna Wide Glide FXDWG/I 1993-2017
Electra Glide Classic FLHTC/I 1984-2013
Electra Glide Special FLHX 1984
Electra Glide Sport FLHS 1984-1993
Electra Glide Standard FLHT/I 1984-2009
Electra Glide Ultra Classic FLHTCU/I 1987-2016
Electra Glide Ultra Classic Low FLHTCUL 2015-2016
Electra Glide Ultra Limited FLHTK 2010-2016
Electra Glide Ultra Limited Low FLHTKL 2015-2016
FLH 1984-1985
Low Glide/Low Rider FXRS 1987-1993
Low Rider Chrome FXRC 1987-1988
Low Rider Sport FXRS-SP 1987-1993
Night Rod Special VRSCDX 2007-2017
Night Rod VRSCD 2006
Night Rod VRSCD 2007-2008
Road Glide Custom FLTRX 2010-2013
Road Glide FLTR/I 1998-2009
Road Glide FLTRX 2015-2016
Road Glide Special FLTRXS 2015-2016
Road Glide Ultra FLTRU 2011-2016
Road King Classic FLHRC/I 1994-2013
Road King Custom FLHRS/I 1995-2012
Road King FLHR/I 1994-2016
Sport Glide FXRT 1987-1992
Sportster Custom XL1200C 1996-2018
Sportster Custom XL883C 1998-2009
Sportster Deluxe XLH883DLX 1989-1992
Sportster Forty-Eight XL1200X 2010-2018
Sportster Hugger XLH883HUG 1988-2003
Sportster Iron XL883N 2009-2018
Sportster Low/SuperLow XL883L 2005-2018
Sportster Low XL1200L 2006-2011
Sportster Nightster XL1200N 2007-2012
Sportster Roadster XL1200CX 2016-2018
Sportster Roadster XL1200R 2004-2008
Sportster Roadster XL883R 2002-2012
Sportster Seventy-Two XL1200V 2012-2016
Sportster Sport XL1200S 1996-2003
Sportster SuperLow XL1200T 2014-2017
Sportster XL883 2004-2009
Sportster XLH1100 1986-1988
Sportster XLH1200 1988-2003
Sportster XLH883 1986-2003
Street Glide FLHX/I 2006-2016
Street Glide Special FLHXS 2014-2016
Tour Glide Classic FLTC/I 1984-1991
Tour Glide FLT 1984-1991
Tour Glide Ultra Classic FLTCU/I 1989-1995
V-Rod Muscle VRSCF 2009-2017
V-Rod VRSCA 2002-2006
V-Rod VRSCAW 2007-2010
V-Rod VRSCB 2004-2005
V-Rod VRSCX 2007

Shipping

Orders $39.99 and over qualify for our fast free shipping offer. Click Here for FREE Shipping Terms and Conditions.

Please see our International Orders page for orders shipping outside the US.

We show real-time availability on this product page when you select the size/color item you want.  Most items will ship the same business day an order is placed,however if an item requires additional processing time a message will be shown indicating such.

See our full Shipping Policy for further details.

Returns

If your order arrives and it is not right, we will we'll fix it, NO NONSENSE, we promise.

Doesn't fit or just not happy with it? You can return any new, unused and unaltered item within 30 business days of delivery receipt of your item. We will issue a full refund to your original payment method.

See our full Return Policy for all of the pertinent details.

Product Description
With Frequency Sensing Technology and progressively wound springs, the 444 shocks offer a significant ride upgrade over stock. Read More
Part Numbers
Tap To View Part Numbers
Fitment
Tap To View Fitment Details
Shipping & Returns
Tap To View Shipping & Returns Details

Reviews & Questions

4.0 / 5.0
1 Review
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
0
1
0
0
0
Bang For The Buck
5.0 / 5
Features
4.0 / 5
Style
5.0 / 5
Ease Of Install
2.0 / 5
Fit & Finish
5.0 / 5
Durability
5.0 / 5
Bang For The Buck
5 / 5
Features
4 / 5
Style
5 / 5
Ease Of Install
2 / 5
Fit & Finish
5 / 5
Durability
5 / 5
Tri glide shocks
I noted the difference right away, not so the wife. These are a bear to adjust. I had to jack up the trike which unloads the rear suspension and remove the rear wheels. It is possible for me to adjust the shocks by hand. (2) One on the adjuster and the other on the spring and turn both. You also must measure for sag. Not something to do on a regular basis or on the road. If you need to change settings on a regular basis I would go with the Legend Air which RevZilla also sells.
November 13, 2016
Purchased
1 year ago
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 19 questions Browse 19 questions and 28 answers
Why did you choose this?
RevZilla Store
highly recommended by fellow biker
Jim D on May 16, 2017
highly recommended by fellow biker
Jim D on May 16, 2017
Buddy installed 444 series on a full dresser and made his wife very happy. We will see what happens here.
Kenneth M on Feb 13, 2016
Buddy installed 444 series on a full dresser and made his wife very happy. We will see what happens here.
Kenneth M on Feb 13, 2016
These are recommended for HD Trikes...but you leave the "Simple Twist" adjuster on the top of the Shock. On a Trike? Wouldn't a trike shock need the adjuster on the bottom where you could get to it?
A shopper on Nov 14, 2015
BEST ANSWER: The adjuster goes to the bottom per directions.
have a rocket 3 triumph classic 2008 with a motor trike conversion is the progressive 444 suitable ?
A shopper on Jun 8, 2016
25 Customer Reviews
25 4.5/5
Read All Reviews
18 Questions & 26 Answers
Ask A Question